Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:51:33 2013 Optimize a model with 2400 rows, 101200 columns and 204100 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.93s Presolved: 2000 rows, 100900 columns, 203000 nonzeros Variable types: 100500 continuous, 400 integer (400 binary) Root relaxation: objective 8.258498e+05, 8602 iterations, 1.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 825849.833 0 1 - 825849.833 - - 3s H 0 0 830634.24438 825849.833 0.58% - 3s 0 2 825886.195 0 1 830634.244 825886.195 0.57% - 4s 1 3 825986.656 1 1 830634.244 825986.656 0.56% 84.0 5s * 4 3 4 826102.66657 826102.667 0.0% 58.2 5s Explored 5 nodes (8835 simplex iterations) in 5.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.261026665679e+05, best bound 8.261026665679e+05, gap 0.0%